#include<stdio.h>
int main()
{
      int a[10]={0},b,i,c,max,j,d;
      scanf("%d",&c);
      for(i=0;i<c;i++)
        {
            scanf("%d",&b);
             while(b!=0)
             {
                 a[b%10]++;b=b/10;
             }
             max=a[0];
             for(j=0;j<10;j++)
             {
                if(max<=a[j])
                {
                    max=a[j];d=j;

                }
             }
        }

       printf("出現次數最多%d次的數字是",a[d]);
       for(j=0;j<10;j++)
       {
           if(max==a[j])
            printf(" %d",j);
       }
       printf("\n");
       return 0;
}

執行結果：